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package db
import (
"fmt"
"github.com/kotakanbe/go-cpe-dictionary/models"
)
// DB is interface for a database driver
type DB interface {
Name() string
CloseDB() error
GetVendorProducts() ([]string, error)
GetCpesByVendorProduct(string, string) ([]string, error)
InsertCpes([]*models.CategorizedCpe) error
}
// NewDB return DB accessor.
func NewDB(dbType, dbpath string, debugSQL bool) (DB, error) {
switch dbType {
case dialectSqlite3, dialectMysql, dialectPostgreSQL:
return NewRDB(dbType, dbpath, debugSQL)
case dialectRedis:
return NewRedis(dbType, dbpath, debugSQL)
}
return nil, fmt.Errorf("Invalid database dialect, %s", dbType)
}
func chunkSlice(l []*models.CategorizedCpe, n int) chan []*models.CategorizedCpe {
ch := make(chan []*models.CategorizedCpe)
go func() {
for i := 0; i < len(l); i += n {
fromIdx := i
toIdx := i + n
if toIdx > len(l) {
toIdx = len(l)
}
ch <- l[fromIdx:toIdx]
}
close(ch)
}()
return ch
}
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